​​Chesterton has been independently audited for over 20 years to certify that our systems meet or exceed standards of customer satisfaction with a focus on continuous improvement.

A.W. Chesterton Company has long been committed to Quality and Environmental ISO®​ standards* and was, in fact, the first seal manufacturer in the U.S. to achieve ISO 9001 certification and the first in its industry to be registered to ISO 14001.​